package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Employee;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;


@Slf4j
@Service
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;


    @Override
    @Transactional
    public void save(DishDTO dishDTO) {
        //向菜品表插入1条数据
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);

        dishMapper.insert(dish);


        Long id =dish.getId();
        List<DishFlavor> list = dishDTO.getFlavors();
        if(list != null && list.size()>0){
            list.forEach(flavor->{
                flavor.setDishId(dish.getId());
            });
            dishFlavorMapper.insertBatch(list);
        }



    }
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        //下一条sql进行分页，自动加入limit关键字分页
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Transactional
    @Override
    public void deleteBatch(List<Long> ids) {
        //是否在起售
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);

            if(dish.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

        //是否被套餐包含
        List<Long> setmealIds = setmealDishMapper.getSetmealDishIds(ids);
        if(setmealIds != null && setmealIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        // //删除菜品表中的菜品数据
        // for (Long id : ids) {
        //     dishMapper.deleteById(id);
        //     //删除菜品关联的口味数据
        //     dishFlavorMapper.deleteByDishId(id);
        // }

        dishMapper.deleteByIds(ids);
        dishFlavorMapper.deleteByDishIds(ids);



    }

    @Override
    public void startOrStop(Integer status, long id) {
        Dish dish = new Dish();
        dish.setStatus(status);
        dish.setId(id);
        dishMapper.update(dish);
    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        DishVO dishVO = new DishVO();
        Dish dish = dishMapper.getById(id);
        BeanUtils.copyProperties(dish,dishVO);

        List<DishFlavor> list = dishFlavorMapper.getById(id);
        dishVO.setFlavors(list);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        //修改菜品
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        log.error("修改后菜品价格" + dish.getPrice());
        //删除原先口味数据
        dishFlavorMapper.deleteByDishId(dish.getId());

        //新增口味数据
        Long id =dish.getId();
        List<DishFlavor> list = dishDTO.getFlavors();
        if(list != null && list.size()>0){
            list.forEach(flavor->{
                flavor.setDishId(dish.getId());
            });
            dishFlavorMapper.insertBatch(list);
        }
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getById(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
